Senior Mobile Engineer

Senior Mobile Engineer

Fuse Energy

Software Engineering

London, UK Posted on Mar 25, 2026 Apply now

Fuse Energy is a forward-thinking renewable energy startup on a mission to deliver a terawatt of renewable energy - fast. We're combining first-principles thinking with cutting-edge technology to build a radically better energy system. We raised $170M from top-tier investors including Multicoin, Balderton, Lakestar, Accel, Creandum, Lowercarbon, Ribbit, Box Group and strategic angels like Nico Rosberg, the Co-Founder of Solana and GPs behind Meta, Revolut, Spotify, Uber and more.

We’re creating a fully integrated energy company: from developing solar, wind and hydrogen projects to real-time power trading and distributed energy installations. By selling directly to consumers, we cut out the middleman, lower costs and pass on savings to customers.

But we’re not stopping there. We’re also building the Energy Network: a decentralised platform of smart devices that rewards users in Energy Dollars for electrifying their homes, shifting usage to off-peak hours, and helping balance the grid. This network strengthens grid stability - a critical foundation for scaling AI data centers and other energy-intensive industries.

Responsibilities

Design, build, and maintain responsive, reusable, and reliable mobile applications for iOS and Android platforms Work closely with designers to implement high-quality UI/UX and ensure design consistency Contribute to architectural decisions to ensure scalability, maintainability, and flexibility of the mobile codebase Test, debug, and resolve issues to maintain app stability and reliability Troubleshoot production issues and provide timely resolutions to ensure smooth user experiences 5+ years of professional experience building mobile applications for iOS and Android Proficiency in Swift and Kotlin Strong grasp of mobile UI/UX principles and best practices for creating intuitive, responsive experiences Hands-on experience integrating RESTful APIs with mobile applications Familiarity with push notifications, messaging services, and related mobile frameworks Understanding of mobile security fundamentals and ability to implement secure data handling Competitive salary and an equity sign-on bonus Biannual bonus scheme Fully expensed tech to match your needs Paid annual leave Breakfast and dinner allowance for office based employees Apply now See more open positions at Fuse Energy